PUF Security

Overview

A physical unclonable function, or PUF, is a "digital fingerprint" that serves as a unique identity for a semiconductor device such as a microprocessor. PUFs are based on physical variations which occur naturally during semiconductor manufacturing, which makes it possible to differentiate between otherwise identical semiconductors.

The PUF IP consists of PUF array and control logic. The PUF array contains 64 to 256 PUF cells and readout circuit. Each PUF cell contains two units with identical physical design. The fabrication process will induce random variation in each unit. The readout circuit is used to compare the difference between the two units and extract a random PUF bit.

Key Features

Root of trust, unclonable, chip dependent ID with unique static and dynamic signature behavior in each chip
Process dependent, fully invisible
Supports multiple process nodes from 0.18μm to 3nm
Small die size
Low power consumption
PUF size: 64 to 256 bits (could extend to 1K bit)
No need for special mask layer, single core voltage supply
Large inter-hamming-distance / Small intra-hamming-distance

Benefits

Easy integrated with pre-assembled hard-macro
Fully customizable solutions

Block Diagram

Applications

Cybersecurity and Data Protection
Internet of Things
Semiconductor and Electronics Manufacturing
Financial Services and Banking

Deliverables

Databook
Encrypted Verilog Model
Timing Library Model (LIB)
Library Exchange Format (LEF)
GDSII Database
Evaluation Board if Available

Technical Specifications

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